I sometimes think about the arrogant dwarf starsmiths in the question. How to blow up a star by accident?
I pose the question in the voice of the dwarf, probably because I am hungry for down votes.
A dead world, eons frozen, circling the dark of its dead sun. Long ago this world bloomed with life. But its sun was old. Even as the star withered in dying and its fires dimmed, its child moved away, as if fearful of the dying. Then the child died too. At the equator, last refuge in a freezing world, this world’s creatures lay yet, curled waiting for a summer that would never come. The strange snows cover their forms – first water, then nitrogen, then last the oxygen, falling from the cold sky. Thus the world has lain, for a thousand million years.
Could this world live again? Its own goddess is gone, but the Goddess of our home world is free with her favors. Just as a cave opened to the light will spring to the green, so too the Goddess could take this world and make it her own – if we could give her a light and heat to do it.
We do not have the craft to build a star but we have mastery of fission. We can build a moonlet of the heavy elements that sustain the fission. The fires of fission cannot be allowed to burn too hot - to stoke the fire, we will lard it with carbon and quench the force that would otherwise overwhelm it. Controlled, a great stone (50,000 m 3 ) of the ninety-second element (uranium) can burn with the power of a star for a million years. source
The power is there. Now how to make this a light suitable for a Goddess? The glow of a fusion star is its heat but this moon cannot be as hot as a star or it will burn too fast. Each element has its color. Can we add these elements such that when heated they glow with the reds and greens of a star, but without the heat that would consume it before the world is warmed?
In sum: A life-giving star emits much energy in the visible frequencies.
A fission reaction hot enough to glow like a star will runaway and explode. Can one add various elements to the surface of a fissioning satellite of uranium such that the glow of the respective elements can duplicate the frequencies (and energy output) of a star?